defective fuel pump
Repair or replace the oil pump, or replace the valves, if the oil pump is working properly.
You must drop the fuel tank or slide the bed back far enough to access the pump.
The pump is located inside the fuel tank and that can be a tough guy to get to
In the gas tank
The 1986 ford f150 has two fuel pumps. There is one pump mounted inside of each fuel tank.
1997 ford f150 fuel pressure specs
Yes, you can replace the oil pump in a 1978 F150 with 351 Winsor without lifting the motor. To replace the oil pump you will need the proper tools and supplies.
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What is it doing